A Microsoft executive said that we're not in a post-PC era: iPads and other mobile devices are PCs.

Frank X. Shaw, Corporate Vice President of Corporate Communications at Microsoft, recently visited the 11th edition of the All Things Digital conference (D11) and said that PCs are still alive and well.

In a blog post, Shaw wrote that Walt Mossberg and Kara Swisher (both technology columnists for The Wall Street Journal) spoke at D11 about what it means to be in a post-PC era.

As Shaw listened to them speak, he noticed that the rest of the room was using a myriad of mobile devices like iPads. But he noted that these iPads and other tablets were being used just like a laptop, with a physical keyboard attached, a network connected, documents being created and tweets being posted.

“The form factors are different, but let’s be clear, each is a PC,” wrote Shaw. “Many of those form factors are more mobile, and look different from the traditional desktop PC, but the same core idea drives it – personal in nature, used for work and for play, runs applications, connected to a network… etc. No matter what label you put on them, they are personal computing devices.”

Shaw went on to toot Microsoft’s horn a bit, saying that Microsoft has the second highest number of unique visitors to its Internet properties (according to a study by Mary Meeker at Kleiner Perkins Caufield & Byers) and mentioning that the future of television isn’t Apple TV or Google’s TV, but the Xbox.

Shaw even addressed Windows Phone, which is trying to compete in a market dominated by Apple and Samsung.

“Admittedly, our great competitors in this market, Apple and Samsung primarily, have earned significant share,” wrote Shaw. “But while some want to suggest it’s game over in the smartphone market, Mary’s report makes it clear that it’s about the second inning in a nine-inning game, or about the 15-minute mark in a futbol match. As our recent Windows Phone ad points out, the iPhone and Android aren’t the only options for smartphone purchasers.

“And as Michael Stroh pointed out on our Windows Phone Blog, this year, the Nokia Lumia 920 with Windows Phone 8 won Engadget’s Smartphone of the Year prize; Windows Phone 8 swept the mobile OS category in PCMAG’s Reader’s Choice Awards; and Gizmodo concluded the Lumia 920’s camera was tops among smartphones, particularly in low light. And that phone and camera just keep getting better and better.”

Microsoft recently mocked the iPad in a commercial for the ASUS VivoTab Smart 64GB. The commercial pokes fun at the fact that Siri seems to be a "more talking, less doing" sort of assistant that has trouble understanding what you ask it. Meanwhile, a user breezes through several tasks on the VivoTab while Siri attempts to figure out what you want from it.

Shaw concluded that the PC hasn’t gone anywhere. Tablets and other mobile devices, for all intents and purposes, are used the same way as PCs – just more mobile.